Chapter 1 Introduction - Cabletron Systems MMAC-Plus 9E312-12 User Manual

Chapter 1
Introduction
The 9E312-12 is a thirteen port switching module with twelve front panel Ethernet
interfaces and one Internal Network Bus (INB) backplane interface. This module
uses a Fast Packet Switch (FPS) hardware based switch design and an advanced
®
Intel i960 microprocessor. This microprocessor provides a platform for all
management functions within a scalable RISC-Based Architecture.
The module can operate in two modes; as a 12 port Ethernet bridge with a high
speed backbone connection or as 12 Ethernet connections to a Cabletron
SecureFast™ Packet Switch (SFPS). Each port of the 9E312-12 can be configured to
operate in the Full Duplex mode. This configuration allows each port to provide a
full 20 Mbps of bandwidth.
Network management information is available through a variety of methods. All
information based on SNMP is accessible either via an in-band (Front Panel port),
Side Band (SMB-10), or via the EM's COM ports using a Network Management
Server, and Serial Line Interface Protocol (SLIP) or Point-to-Point Protocol (PPP).
For more information on the SMB-10, SLIP or PPP refer to the MMAC-Plus Local
Management User's Guide.
The 9E312-12 also features front panel LANVIEW™ Diagnostic LED's to offer at-
a-glance status information about each front panel port as well as the operation of
the overall module.
Ethernet networks are connected to the 9E312-12 module using standard Ethernet
10 Base-T RJ-45 connectors on the front panel with connectivity for UTP and STP
links up to 100 meters in length.
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